British Dictionary definitions for hydrastine

hydrastine

/ (haɪˈdræstiːn, -tɪn) /

noun

a white poisonous alkaloid extracted from the roots of the goldenseal: has been used in medicine (in the form of one of its water-soluble salts) to contract the uterus and arrest haemorrhage. Formula: C 21 H 21 NO 6